Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
237 PM CDT Tue Jul 15 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-161945-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
237 PM CDT Tue Jul 15 2025 /337 PM EDT Tue Jul 15 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
DISCUSSION...
Isolated thunderstorms will continue through this evening,
especially south of I-80. No severe weather is expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Level 2 of 4 Flash Flooding Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Friday...
High Swim Risk Lake Michigan Beaches.
Saturday through Monday...
Limited to Elevated Flooding Risk.
Limited to Elevated Thunderstorm Risk.
DISCUSSION...
Scattered severe storms are possible Wednesday afternoon with
damaging winds and damaging hail as the main threats. Flash
flooding may also occur where thunderstorms train.
High waves will cause dangerous swimming conditions at Lake
Michigan beaches Thursday through Friday.
There will be periodic bouts of showers and thunderstorms
Saturday through Monday. Any storm during this period may be
severe with damaging winds and flash flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the north at 10 mph.
$$
Hazardous Weather Outlook
National Weather Service Northern Indiana
931 PM EDT Tue Jul 15 2025
INZ005>009-012>015-017-018-020-022>027-032>034-103-104-116-203-204-
216-MIZ078>081-177-277-OHZ001-002-004-005-015-016-024-025-170145-
Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski-Marshall-
Fulton IN-Whitley-Allen IN-White-Cass IN-Miami-Wabash-Huntington-
Wells-Adams-Grant-Blackford-Jay-Northern La Porte-
Eastern St. Joseph IN-Northern Kosciusko-Southern La Porte-
Western St. Joseph IN-Southern Kosciusko-Cass MI-St. Joseph MI-
Branch-Hillsdale-Northern Berrien-Southern Berrien-Williams-
Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
931 PM EDT Tue Jul 15 2025 /831 PM CDT Tue Jul 15 2025/
This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.
.DAY ONE...Tonight.
Hazardous weather is not expected at this time.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Periodic chances of showers and thunderstorms are expected for much
of this period. Greatest potential of storms will be Wednesday night
into Thursday, and then again on Saturday and Sunday. There is a
Marginal Risk of severe storms for Wednesday night, mainly for a
threat of strong wind gusts. Some locally heavy rainfall is possible
with any of the thunderstorms.
Dangerous swimming conditions are possible Thursday afternoon into
early Friday across southeast Lake Michigan beaches. North winds are
expected to develop behind a cold front leading to building waves.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Lincoln IL
303 PM CDT Tue Jul 15 2025
ILZ027>031-036>038-040-041-161100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-
303 PM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for central Illinois and west
central Illinois.
.DAY ONE...Tonight.
Isolated thunderstorms will be possible until dusk mainly southeast
of the IL river. Cloud to ground lightning will be a risk from this
activity.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Hot and humid conditions will push heat index values 98 to 105
degrees Wednesday afternoon.
Scattered thunderstorms are expected Wednesday afternoon through
Thursday afternoon, and again Saturday through Sunday. There is a
level 2 of 5 (slight) risk for severe weather from mid Wednesday
afternoon into mid Wednesday evening north of a Rushville to
Bloomington line, and a level 1 of 5 (marginal) risk further south.
The main risk will be from damaging straight line winds, though
isolated tornadoes are possible. Frequent cloud to ground lightning
strikes and heavy rain are also expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated tonight.
$$
07
Hazardous Weather Outlook
National Weather Service Lincoln IL
303 PM CDT Tue Jul 15 2025
ILZ042>057-061>063-066>068-071>073-161100-
Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-Morgan-
Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
303 PM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for central Illinois, east
central Illinois, southeast Illinois and west central Illinois.
.DAY ONE...Tonight.
Isolated to scattered thunderstorms will occur through this evening.
Cloud to ground lightning, locally heavy rain and gusty winds will
be the main risks from this activity.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Hot and humid conditions will push heat index values of 97 to 102
degrees Wednesday afternoon.
Scattered thunderstorms are expected Wednesday afternoon through
Friday afternoon, and again Saturday through Sunday. There is a
level 1 of 5 (marginal) risk for severe weather from mid Wednesday
afternoon into mid Wednesday evening north of I-70. The main risk
will be from damaging straight line winds, though frequent cloud to
ground lightning strikes and heavy rain are also expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated tonight.
$$
Hazardous Weather Outlook
National Weather Service Indianapolis IN
317 PM EDT Tue Jul 15 2025
INZ021-028>031-035>049-161930-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-
317 PM EDT Tue Jul 15 2025
This hazardous weather outlook is for central Indiana.
.DAY ONE...Through Tonight.
Scattered thunderstorms will continue into the evening hours before
diminishing overnight. Severe storms are not expected. Heavy rain and
lightning are threats from any storm.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Thunderstorms are likely most days, with the lowest threat being
Friday.
Isolated strong to marginally severe storms are possible Wednesday
night. Isolated damaging wind gusts are the primary threat.
Otherwise, lightning and locally heavy rain will be the primary
threats with storms this week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
&&
More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
202 PM CDT Tue Jul 15 2025
WIZ046-047-051-052-056>060-062>072-161915-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
202 PM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Areas of fog may occur in and around the Wisconsin River Valley.
.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday
Strong to severe thunderstorms with gusty winds, hail, and heavy
rainfall possible Wednesday afternoon and evening.
Thunderstorms may linger into Thursday morning, with additional
chances returning during the weekend.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed Wednesday afternoon and evening.
$$
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
458 AM EDT Tue Jul 15 2025
MIZ037>040-043>046-050>052-056>059-064>067-071>074-160900-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
458 AM EDT Tue Jul 15 2025
This hazardous weather outlook is for portions of southwest Lower
Michigan.
.DAY ONE...Today and Tonight
Patchy fog will be possible this morning.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Thunderstorms will become possible Wednesday morning, and will
continue to be possible into Thursday. Some of the storms could
become locally strong to severe. Large hail to quarter sized, wind
gusts up to 60 mph, locally heavy rainfall, and lightning will be
the main threats.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will be possible Wednesday afternoon and
evening.
$$
